Mitsubishi Galant (2004+). Manual — part 179
ENGINE CONTROL
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ENGINE AND EMISSION CONTROL
17-7
INSPECTION PROCEDURE 2: Accelerator Pedal Operation Not Smooth (Over Acceleration)
.
COMMENT
The accelerator pedal, its installation condition or the
accelerator pedal position sensor (APS) is sus-
pected.
.
TROUBLESHOOTING HINTS (The most likely
causes for this case:)
• Malfunction of the accelerator pedal.
• Incorrectly installed accelerator pedal
• Malfunction of the accelerator pedal position sen-
sor (APS).
DIAGNOSIS
Required Special Tool:
• MB991958: Scan Tool (MUT-III sub assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991910: Main Harness A
STEP 1. Check if the accelerator pedal and the accelerator
pedal are installed correctly.
Q: Are the accelerator pedal and the accelerator pedal
installed correctly?
YES : Go to Step 2.
NO : Replace and reinstall the accelerator pedal (Refer to
). Go to Step 3.
ENGINE CONTROL
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ENGINE AND EMISSION CONTROL
17-8
STEP 2. Using scan tool MB991958, read the diagnostic
trouble code (DTC).
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Ensure that the ignition switch is at the "LOCK" (OFF)
position.
(2) Start up the personal computer.
(3) Connect special tool MB991827 to special tool MB991824
and the personal computer.
(4) Connect special tool MB991910 to special tool MB991824.
(5) Connect special tool MB991910 to the data link connector.
(6) Turn the power switch of special tool MB991824 to the "ON"
position.
NOTE: When special tool MB991824 is energized, special
tool MB991824 indicator light will be illuminated in a green
color.
(7) Start the MUT-III system on the personal computer.
(8) Turn the ignition switch to the "ON" position.
(9) Check for MFI system diagnostic trouble code (Refer to
GROUP 13A, MFI Diagnosis - How to Read and Erase
Diagnostic Trouble Code
(10)Turn the ignition switch to the "LOCK" (OFF) position, and
then remove scan tool MB991958 in the reverse order of
installation.
Q: Is any DTC set?
YES : Refer to GROUP 13A, MFI Diagnosis
− Diagnostic
Trouble Code Chart
NO : Go to Step 3.
STEP 3. Retest the system.
Q: Does the accelerator pedal work normally?
YES : The procedure is complete.
NO : Return to Step 1.
AC305412
AB
MB991910
DATA LINK
CONNECTOR
MB991824
MB991827
ENGINE CONTROL
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ENGINE AND EMISSION CONTROL
17-9
ACCELERATOR CABLE AND PEDAL
REMOVAL AND INSTALLATION
M1171001200363
AC307006AB
1
13 ± 2 N·m
111 ± 22 in-lb
2
3
REMOVAL STEPS
1. ACCELERATOR PEDAL POSITION
SENSOR (APS) CONNECTOR
2. ACCELERATOR PEDAL ASSEMBLY
3. ACCELERATOR STOPPER
REMOVAL STEPS (Continued)
AUTO-CRUISE CONTROL
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ENGINE AND EMISSION CONTROL
17-10
AUTO-CRUISE CONTROL
GENERAL DESCRIPTION
M1172000100281
By using the auto-cruise control, the driver can select
and maintain a desired cruising speed [between 40
km/h (25 mph) and 200 km/h (124 mph)] without
depressing the accelerator pedal.
CONSTRUCTION DIAGRAM
AC305704
AC206195
AC305701
AC305702
9 10 11 12 13 14 15 16
1
2 3
4 5 6 7 8
AC305703
AB
STOPLIGHT SWITCH
PCM
TRANSMISSION
RANGE SWITCH
THROTTLE BODY
(BUILT-IN THROTTLE
POSITION SENSOR
AND THROTTLE
ACTUATOR CONTROL
MOTOR)
"CRUISE" INDICATOR
LIGHT
AUTO-CRUISE
CONTROL SWITCH
DATA LINK
CONNECTOR
ACCELERATOR PEDAL
(BUILT-IN ACCELERATOR
PEDAL POSITION SENSOR)
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